LT6703-3 Linear Technology Corporation, LT6703-3 Datasheet

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LT6703-3

Manufacturer Part Number
LT6703-3
Description
Micropower, Low Voltage Comparator With 400mv Reference
Manufacturer
Linear Technology Corporation
Datasheet
FEATURES
APPLICATIONS
TYPICAL APPLICATION
Internal 400mV Reference
Total Threshold Error: ± 1.25% Max at 25°C
Wide Supply Range: 1.4V to 18V
Specifi ed for –40 to 125°C Temperature Range
Low Quiescent Current: 6.5μA Typ at 5V
Internal Hysteresis: 6.5mV Typ
Low Input Bias Current: ±10nA Max
Over-The-Top
Open-Collector Output Allows Level Translation
Choice of Input Polarities: LT6703-2/LT6703-3
Available in a 2mm × 2mm DFN Package
Battery-Powered System Monitoring
Threshold Detectors
Window Comparators
Relay Driving
Optoisolator Driving
Industrial Control Systems
Handheld Instruments
0.1μF
Micropower Supply Voltage Monitor
1MΩ
154k
®
Input also Includes Ground
+IN
LT6703-3
+
REFERENCE
1.4V ≤ V
400mV
(V
TH
V
GND
S
IN
= 3V)
≤ 18V
OUT
V
S
670323 TA01
1MΩ
DESCRIPTION
The LT
voltage comparator with a 400mV reference in a tiny DFN
package. Operating with supplies from 1.4V up to 18V,
these devices draw only 6.5μA, making them ideal for
low voltage system monitoring. Hysteresis is included in
the comparator, ensuring stable operation.
The comparator has one input available externally while
the other input is connected internally to the reference. The
comparator output is open collector and the output load
can be referred to any voltage up to 18V independent of
supply voltage. The output stage has a guaranteed current
sink capability of more than 5mA over temperature.
The two versions of this part differ by the polarity of the
available comparator input. The LT6703-2 has an inverting
input and the LT6703-3 has a noninverting input. Both
versions are offered in commercial, industrial and automo-
tive temperature ranges.
Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Micropower, Low Voltage
, LT, LTC, LTM and Over-The-Top are registered trademarks of Linear Technology
®
Rising Input Threshold Voltage vs Temperature
6703-2/LT6703-3 combine a micropower, low
404
403
402
401
400
399
398
397
396
–60 –40
400mV Reference
LT6703-2/LT6703-3
Comparator with
–20 0
TEMPERATURE (°C)
#1
#2
#3
#4
20 40 60 80
FOUR TYPICAL PARTS
V
S
= 5V
100 120
670323 G04
670323fa
1

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LT6703-3 Summary of contents

Page 1

... The two versions of this part differ by the polarity of the available comparator input. The LT6703-2 has an inverting input and the LT6703-3 has a noninverting input. Both versions are offered in commercial, industrial and automo- tive temperature ranges. ...

Page 2

... DC PACKAGE 3-LEAD (2mm × 2mm) PLASTIC DFN = 125°C, θ 102°C/W JMAX JA LT6703-3 TEMPERATURE RANGE 0°C to 70°C –40°C to 85°C –40°C to 125°C 0°C to 70°C –40°C to 85°C –40°C to 125°C 670323fa ...

Page 3

... Input Overdrive 5V 5mA S OUT V = 1.4V, 18V 40mV Overdrive S OUT 1.4V 18V 40mV Overdrive S OUT IN No Load Current LT6703-2/LT6703-3 MIN TYP MAX UNITS 395 400 405 mV 387 393.5 400 mV 3.5 6.5 9.5 mV ±0.01 ±10 ±0.01 ±10 ±4 ±10 70 200 mV 0 ...

Page 4

... LT6703-2/LT6703-3 ELECTRICAL CHARACTERISTICS The denotes the specifi cations which apply over the temperature range of –40°C ≤ T ● otherwise specifi ed (Notes 4, 5). SYMBOL PARAMETER V Rising Input Threshold Voltage (Note 6) R TH(R) V Falling Input Threshold Voltage (Note 6) R TH(F) HYS HYS = V – ...

Page 5

... PF02 IN: External Input for Comparator. The voltage on this pin can range from –0.3V to 18V with respect to GND regardless of V used. The input is noninverting for the LT6703-3, and S inverting for the LT6703-2. The other comparator input is internally connected to the 400mV reference. ...

Page 6

... LT6703-2/LT6703-3 TYPICAL PERFORMANCE CHARACTERISTICS Distribution of Rising Input Threshold Voltage 25° 394 396 398 400 402 404 RISING INPUT THRESHOLD VOLTAGE (mV) 670323 G01 Rising Input Threshold Voltage vs Temperature 404 FOUR TYPICAL PARTS ...

Page 7

... Supply Voltage 25° 125° 85° –55° LOAD CURRENT 1.4 3.4 5.4 7.4 9.4 11.4 13.4 15.4 17.4 SUPPLY VOLTAGE (V) 670323 G11 LT6703-2/LT6703-3 Hysteresis vs Supply Voltage 25° 125° 85° –55° ...

Page 8

... LT6703-2/LT6703-3 TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Output Sink Current 1000 T = –40° 1. 12V 18V S 100 10 1 0.001 0.01 0 OUTPUT SINK CURRENT (mA) 670323 G13 Below Ground Input Bias Current 10000 V = 18V S –0.3V < V < 25° 85°C ...

Page 9

... Rise and Fall Times vs Output Pull-Up Resistor 100 20pF 25° RISE FALL 1 0.1 0.01 0 100 100 OUTPUT PULL-UP RESISTOR (kΩ) LT6703-2/LT6703-3 Output Saturation Voltage vs Output Sink Current 1000 T = 85° 1. 12V 18V S 100 10 0.001 0.01 0.1 ...

Page 10

... LT6703-2/LT6703-3 APPLICATIONS INFORMATION The LT6703-2/LT6703-3 devices are micropower compara- tors with a built-in 400mV reference. Features include wide supply voltage range (1.4V to 18V), Over-The-Top input and output range, 2% accurate rising input threshold voltage and 6.5mV typical built-in hysteresis. Internal Reference Each comparator has one input available externally. The two versions of the part differ by the polarity of the available input (i ...

Page 11

... DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE LT6703-2/LT6703-3 1.35 ± 0.05 (2 SIDES 0.05 TYP PIN 1 NOTCH R = 0.20 OR 0.25 × ...

Page 12

... FAX: (408) 434-0507 ● 1. 10k 15V LT6703-3 V OUT +IN OUT 0V GND Level Translator High Voltage to Low Voltage 1.8V 15V V S 10k 1.8V LT6703-3 V +IN OUT OUT 0V GND Level Translator Low Voltage to High Voltage 12V 5V LED ( LOAD S 1k LT6703-2 –IN OUT R 0.1 S ...

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